SBR Barrel Length

ONe thing that people don't seem to pay enough attention to is reciprocating mass.

You can remove all the weights out of a standard buffer and run an AR15 rather than an M16 bolt carrier and save several ounces. (Remember that almost all ARs these days come with the heavier M16 bolt carrier)

You would need to use a heavier power spring from someone like Sprinco but it is possible to keep bolt speed to a reasonable level without that extra weight.

If you really want to go crazy, JP Rifles has reintroduced their ALUMINUM bolt carrier for $300+

Don
 
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